This portable web browser for Windows allows usage of Flash Player plugin after January 12, 2021.
This browser is Basilisk version 2020.11.25, the last Windows 32-bit build from https://basilisk-browser.org/.
It was made portable by copying the files from Pale Moon Portable, modifying the INI file, and renaming files appropriately. The INI file was modified to load the Flash plugin from the Plugins folder included with the program.
A Plugins folder containing Flash Player 126.96.36.1993 (NPAPI, Windows 32-bit) was added to the main program folder. The Flash Player was hacked to prevent it from contacting Adobe's servers, meaning that Adobe has no ability to disable this Flash plugin in the future.
Several preferences were set to enable smooth Flash playback in 2021 and beyond.
This preference ensures that Flash cannot be disabled via the browser's add-on blocklist:
extensions.blocklist.enabled = false
These preferences make Flash content play more smoothly: